Mechanical properties of inorganic powder modified polypropylene spun-bonded fabric by inorganic powder

The article studied the relationship between the mass fraction of inorganic powder calcium carbonate,fiber structure,and mechanical properties of modified PP spun-bonded nonwovens.The results showed that when the mass fraction of inorganic powder calcium carbonate was smaller and the surface density of PP spun-bonded non-woven fabric was higher,there was an increasing trend in breaking strength of the modified PP spun-bonded non-wovens.When the surface density was lower,the breaking strength of the modified PP spun-bonded non-wovens presented a downward trend with the mass fraction of calcium carbonate increasing.Addition of the inorganic powder enhanced the crystallinity,which made the initial modulus of modified PP spun-bonded nonwovens improve.When inorganic powder was added to a certain extent,both the crystallinity initial modulus began to decline.Meanwhile,increasing the proportion of inorganic powder makes the temperatures of upper and lower rollers rise slightly and the pliability of PP spun-bonded non-wovens gradually decrease.